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WO2008038110A3 - Wireless transceiver - Google Patents

Wireless transceiver Download PDF

Info

Publication number
WO2008038110A3
WO2008038110A3 PCT/IB2007/002805 IB2007002805W WO2008038110A3 WO 2008038110 A3 WO2008038110 A3 WO 2008038110A3 IB 2007002805 W IB2007002805 W IB 2007002805W WO 2008038110 A3 WO2008038110 A3 WO 2008038110A3
Authority
WO
WIPO (PCT)
Prior art keywords
prefilter
wireless
channel
frequency response
decomposed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/IB2007/002805
Other languages
French (fr)
Other versions
WO2008038110A2 (en
Inventor
Kyeong Jin Kim
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nokia Inc
Original Assignee
Nokia Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nokia Inc filed Critical Nokia Inc
Priority to EP07858844A priority Critical patent/EP2070212A2/en
Priority to US12/443,444 priority patent/US20100232479A1/en
Publication of WO2008038110A2 publication Critical patent/WO2008038110A2/en
Publication of WO2008038110A3 publication Critical patent/WO2008038110A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0204—Channel estimation of multiple channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/022—Channel estimation of frequency response
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L25/03343—Arrangements at the transmitter end
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
    • H04B7/046—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting taking physical layer constraints into account
    • H04B7/0465—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting taking physical layer constraints into account taking power constraints at power amplifier or emission constraints, e.g. constant modulus, into account
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L2025/0335—Arrangements for removing intersymbol interference characterised by the type of transmission
    • H04L2025/03375—Passband transmission
    • H04L2025/03414—Multicarrier

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Radio Transmission System (AREA)
  • Transmitters (AREA)

Abstract

Various example embodiments are disclosed relating to wireless transceivers, such as, for example, wireless MIMO (multiple input multiple output) systems. In an example embodiment, a method may include determining an updated channel frequency response (502), and determining a prefilter for use in a wireless MIMO transmitter based on the updated channel frequency response (504) to reduce an error between transmitted and received signals. The prefilter may include a plurality of decomposed channel matrices, at least one of the decomposed channel matrices may have equal diagonal values (such as, for example, an upper triangular matrix R having equal diagonal values). The prefilter may then be used to process or prefilter a received signal for transmission over a wireless channel.
PCT/IB2007/002805 2006-09-29 2007-09-26 Wireless transceiver Ceased WO2008038110A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP07858844A EP2070212A2 (en) 2006-09-29 2007-09-26 Wireless transceiver
US12/443,444 US20100232479A1 (en) 2006-09-29 2007-09-26 Wireless transceiver

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US82753706P 2006-09-29 2006-09-29
US60827537 2006-09-29

Publications (2)

Publication Number Publication Date
WO2008038110A2 WO2008038110A2 (en) 2008-04-03
WO2008038110A3 true WO2008038110A3 (en) 2008-08-28

Family

ID=39230586

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2007/002805 Ceased WO2008038110A2 (en) 2006-09-29 2007-09-26 Wireless transceiver

Country Status (3)

Country Link
US (1) US20100232479A1 (en)
EP (1) EP2070212A2 (en)
WO (1) WO2008038110A2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009095889A2 (en) 2008-01-31 2009-08-06 Nokia Corporation Mimo-ofdm wireless communication system
US8238234B2 (en) * 2009-06-03 2012-08-07 Qualcomm Incorporated Switching between MIMO and receiver beam forming in a peer-to-peer network
US9215001B2 (en) 2012-09-24 2015-12-15 Telefonaktiebolaget L M Ericsson (Publ) Prefiltering in MIMO receiver
US20140334561A1 (en) * 2013-05-13 2014-11-13 Blackberry Limited Method and System for Symbol Detection Using Matrix Decomposition

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050259627A1 (en) * 2004-05-19 2005-11-24 Jian Song Method and system for providing multi-input-multi-output (MIMO) downlink transmission

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1938543B1 (en) * 2005-09-29 2009-09-09 Interdigital Technology Corporation Mimo beamforming-based single carrier frequency division multiple access system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050259627A1 (en) * 2004-05-19 2005-11-24 Jian Song Method and system for providing multi-input-multi-output (MIMO) downlink transmission

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
JIANZHONG ZHANG ET AL.: "Near-Capacity MIMO Multiuser Precoding with QRD-M Algorithm", SIGNALS, SYSTEMS AND COMPUTERS, 2005. CONFERENCE RECORD OF THE THIRTY-NINTH ASILOMAR CONFERENCE, 28 October 2005 (2005-10-28) - 1 November 2005 (2005-11-01), pages 1498 - 1502, XP010900266 *
KIM K.J. ET AL.: "Jointly Optimized MIMO Muliuser Precoding System with Channel Mismatch", SIGNALS, SYSTEMS AND COMPUTERS, 2006. ACSSC'06. FORTIETH ASILOMAR CONFERENCE, October 2006 (2006-10-01) - November 2006 (2006-11-01), pages 384 - 388, XP031081074 *
YI JIANG ET AL.: "Joint transceiver design for MIMO communications using geometric mean decomposition", SIGNAL PROCESSING, IEEE TRANSACTIONS ON USEE ALSO ACOUSTICS, SPEECH, AND SIGNAL PROCESSING, IEEE TRANSACTIONS], vol. 53, no. 10, October 2005 (2005-10-01), pages 3791 - 3803, XP011139375 *
YI JIANG ET AL.: "Uniform channel decomposition for MIMO communications", SIGNAL PROCESSING, IEEE TRANSACTIONS ON USEE ALSO ACOUSTICS, SPEECH, AND SIGNAL PROCESSING, IEEE TRANSACTIONS], vol. 53, no. 11, November 2005 (2005-11-01), pages 4283 - 4294, XP011141129 *

Also Published As

Publication number Publication date
US20100232479A1 (en) 2010-09-16
EP2070212A2 (en) 2009-06-17
WO2008038110A2 (en) 2008-04-03

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